Weiland attorney Tony Brooklier says the singer, 40, completed 28 days in a treatment facility after checking in early last month. Weiland, whose treatment forced the band to cancel tour dates in February, is "doing well," Brooklier said.

Velvet Revolver frontman Scott Weiland is voluntarily seeking treatment at a rehab facility, according to Blabbermouth.net.

Velvet Revolver's management released a statement to the site confirming the rocker, 40, "voluntarily entered a rehab facility" after the band's Los Angeles performance on Wednesday, prompting the group to cancel Thursday night's scheduled show in San Diego. "Velvet Revolver deeply apologize to their fans and thank them for sticking by the group," the band said in a statement.

Scott Weiland was formally charged Wednesday for one count of driving under the influence of drugs with a prior conviction, prosecutors tell PEOPLE.

The Los Angeles City Attorney's office is also alleging that the Velvet
Revolver singer, 40, refused to take a chemical test as required by law.

If convicted, Weiland faces a maximum sentence of one year in jail and a $1,000 fine. His car could also be impounded for up to 30 days. However, City Attorney spokesman Frank Mateljan adds that Weiland faces "a minimum penalty of eight days in jail."

His arraignment is set for Thursday.

Weiland was arrested Nov. 11 in the San Fernando Valley after failing a field sobriety test. Police say he later refused to take a blood or urine test after he was booked at Van Nuys Jail.

Weiland, 40, who has long battled substance abuse, was arrested after crashing his car and failing sobriety tests on Nov. 11 in Southern California's San Fernando Valley, the California Highway Patrol said in a statement. No one was injured in the accident.

The wife of Velvet Revolver singer Scott Weiland was arrested and booked for investigation of felony arson vandalism after allegedly burning his clothes outside their Southern California home, police said Monday.

PLANNED: An all-star creative team is set to give Spider-Man the Broadway musical treatment. Variety reports that The Lion King auteur Julie Taymor will direct, The Crying Game's Neil Jordan will write the book, and songs will be supplied by Bono and The Edge of U2. Talks are reportedly underway between Marvel Comics and Victor./Victoria producer Tony Adams. No word on a potential Spidey, though Hugh Jackman can do anything.